Hey guys. I have a 08 2.4L with 97000 miles on it. I have codes po171, 174, and p2197 (I assume 2179 is there because of the other codes because my 02s are all brand new) popping up. What could be causing these? Btw if this helps when I was around 4K rpms this morning I could hear what sounded like a sucking sound from the motor and a grindin noise when letting off and hitting the brakes. Problem just started last week and some of the symptoms are sometimes she uses more gas than normal, reduced power after she warms up, rough idle, the sound from the engine that sounds like whooshing or sucking air, and that grind noise after letting off the gas at high rpms. I didn’t start hearin the grind noise until those codes popped up though.